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Lumbar spinal stenosis (LSS) is a medical condition in which the spinal canal narrows and compresses the nerves and blood vessels at the level of the lumbar vertebrae. Spinal stenosis may also affect the cervical or thoracic region, in which case it is known as cervical spinal stenosis or thoracic spinal stenosis. Lumbar spinal stenosis can ...
Such severe spinal stenosis symptoms are virtually absent in lumbar stenosis, however, as the spinal cord terminates at the top end of the adult lumbar spine, with only nerve roots (cauda equina) continuing further down. [15] Cervical spinal stenosis is a condition involving narrowing of the spinal canal at the level of the neck.
This is a result of the vertebral artery becoming occluded as it passes up in the transverse foramen. The spinal joints become stiff in cervical spondylosis. Thus the chondrocytes which maintain the disc become deprived of nutrition and die. Secondary osteophytes may cause stenosis for spinal nerves, manifesting as radiculopathy.
Lumbar spinal stenosis is very prevalent with 9.3% of the general population producing symptoms and the number is continuing to rise in patients older than 60. [16] It's generally an indication for spinal surgery in patients older than 65 years of age. [17]
MRI of the lumbar spine showing spinal stenosis. Neurogenic claudication is one subtype of the clinical syndrome of lumbar spinal stenosis (LSS). [9] No gold standard diagnostic criteria currently exist, but evaluation and diagnosis is generally based on the patient history, physical exam, and medical imaging. [1]
Spondylosis deformans is a disease of the spine in humans and other vertebrates. It occurs when intervertebral discs begin to degenerate, leading to the formation of bony spurs or bridges around the disc and nearby spinal joints. Severe cases can result in pressure on the spinal nerves, causing neurological signs and symptoms. [1]
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Laminectomy: Often performed when spinal stenosis occurs in conjunction with spondylolysis. The procedure surgically removes part or all of the lamina from the bony ring of the vertebra to reduce the pressure on the spinal cord. The laminectomy is commonly performed on the vertebrae in the lower back and in the neck.